Ajsbxfflfob



P. R. GLASS.

PUNCHING AND FOLDING MACHINE.

APPLICATION FILED APR. 1. 19l6 Patented Sept. 9, 1919.

2 SHEETS-SHEET 1.

P. R. GLASS;

PUNCHING AN'D FOLDING MACHINE.

APPLICATION FILED APR.1. I916. 7 1,315,223. PatentedSept. 9, 1919.

2 SHEETS-SHEET 2- III M Fi g. 71

all)

I ornament shoe tips.

rnnnnr n. at, or BROOKLINIE, nassncnnsnrre,

application filed. Aprfl l, 1916.

To all whom it may concern:

Be it known that l[, Pnnnnr R. Grass, a citizen of the United States,residing at Brookline, in the count of Norfolk and State ofMassachusetts, ave invented certain Improvements in Punching and FoldingMachines, of which the following description, in connection with theaccompanying drawings, is a specification, like reference characters onthe drawings indicating like parts in the several figures This inventionrelates to machines for op erating upon the margin of a piece offlexible material and is herein illustrated in connection With a machinefor folding the margin of a piece of upper leather and for forming alongsaid margin a row of ornamental perforations.

It is customary to fold the margins of cer-. tain parts of shoe uppersand to ornament them by a row of fancy punch holes, and although Vamps,foxings, etc., are very commonly so treated the present invention w ll,for convenience, be described in connection with a machine specialladapted to fold and attached to the end of a short vamp by a row or rowsof stitches located near one edge of the tip; and this edge, in a flatdied-out tip is slightly curved.-

Hitherto it has been customary to skive the margin of the tip, then tocement the skived margin, then to fold said margin on a suitable machineand finally to form the ornamental perforations by means of a punchingmachine. According to the present invention the skiving and cementingare carried out as before, but the folding and punching are accomplishedprogressively in a single operation.

One feature of the invention comprises, in a machine of the classdescribed, a support for a piece of stock, means for feeding said stockintermittently over said support,

means for forming afoldin the margin of said stock, means for hammerithe fold, and means for unching the stoc near the edge thereof a er thefold has been, made.

With such a construction the two operations of folding and punching aregoing on at the same time whereby the former practice of performing twoseparate operations is ohviated and a large saving of time is eflected.

he tip is ordinarily atented ept. a, ran.

N0. htfitil- I Another feature of the invention coniprises in a machineof this general type, a feed member movable in a path the curve of whichcorresponds approximately to the curvature of the edge of the materialwhich is to be operated upon, and an edge ge to facilitate properlocation of the stori with respect to the feed member. 18 these means sinsured uniform folding an punching of the difierent pieces of material,a result which is diflicult to secure when the two operations areperformed separately.

These and other features of the invention including certain details ofconstruction and combinations of parts will be described in connectionwith an illustrative machine'by which an exemplary method may be carriout and will be pointed out in the appended claims, Referring now to theaccompanying drawin w igure 1 is a front elevation of an illustrativemachine in which the invention in embodied;

Fig. 2 is a perspective of the mechanism Fi 3 is a detail, partly insection, showing t e connection between the clamp and the feed member;

Fig. 4: is a detail perspective of a portion of the clamp;

Fig. 5 is a perspective machine;

Fig. 6 is a detail perspective of the punch and its operating mechanism;

Fig. 7 is a detail, principally in section, showing more particularlythe whole punch in mechanism, and

ig. 8 is a erspective of a shoe tip which has been fol ed and punched onthe machine.

The present invention is illustrated in connection with a foldin machinewhich is similar to that shown an described in British Patent No. 15,405of 1912. The present machine, like that of the patent, comprises a fiatbed or support, herein shown as comof the top of the posed of two plates1 and 3, over which the the margin thereof about the end of the creaserto form the fold, and an oscillating hammer or presser 207 to press thefold thus formed. In the machine of the patent the hammer co5perateswith an anvil to grip the fold; and while the work is thus gri ped thehammer and anvil are moved in a 1rection to feed the work. In thepresent machine the movable anvil and its operating mechanism, as wellas the mechanism for moving the hammer in the direction of feed, havebeen omitted, and a separate feed mechanism which will presently bedescrlbed has been provided. No further descriptlon of the folding andpressing mechanlsm will be given since its details of constructon formno part of the present invention and any suitable folding and pressmgmechanism may be employed. The partlcular mechanism illustrated in thepresent machine forms the subject-matter of certain prior United StatesPatents Nos. 1,270,753 and 1,281,555.

The two plates 1 and 3 have formed between them a segmental guideway 5to receive a segmental rack 7 the'curvature of which is approximatelythe same as the curvature of the edge of the piece of upper materialwhich is to be operated upon. In the operation of the machine the shoetip 100 is clamped to the rack, and the rack is then moved to presentthe margin of the tip progressively, first to the folding mechanismwhich has been indicated above, and then to the punching mechanism shownin Fig. 7. The clamp 9 (see Fig. 3) is connected by a stem 11 with ablock 13 having in it two vertical bores. A pin 15 driven tightly into asocket in the rack 7 is encircled by a spring 17 which tends always tohold the clamp 9 in contact with the rack 7. In order to maintain theclamp in proper alinement with the rack a second pin 19, loose in thesecond bore in the block 13, is held in a socket in the under side ofthe rack 7 by a coiled spring 21, a handle 23 being provided to permitthis pin to be withdrawn from engagement with the clamp when desired.

In order to raise the clamp 9 at the end of the punching and foldingoperation, the lower end of the pin 15 has formed upon it a rack 25 withwhich a pinion coiiperates, so that by turning the pinion the clamp 9may be raised against the action of the sprin 17. Automatic turning ofthe pinion to raise the rack is accomplished through a crank 29 fast tothe stem 127 of the pinion and a curved rod 31 having adjustablyfastened thereon a stop collar 33 (see Fig. 1). The rod is slidablethrough a hole in a part of the frame of the machine and moves with thesegmental rack 7 until the collar strikes the frame, after which furtherforward movement of the rack causes the rod 31 to pull the crank 29 andthereby to raise the the spindle 51 on which the beveled gear 45 isloosely mounted, and an intermittent gri device 53 rotatable on thespindle 51 and adapted to impart rotation to the clutch member 49. Sinceany suitable intermittent gnp device ma be employed the oneillustratedvwill not e further described. On the back of the beveledgear 45 (see Fig. 1) is a tapered cam 55 which, when the beveled gearhas nearly accomplished a revolution, engages an abutment on a yoke 57between the arms of which the clutch member 49 is revolubly mounted,thereby swinging said yoke to the left about its pivot 59 and separatingthe clutch members 47 49. A spring pin 61 holds the yoke lightly asshown in its rearward position after the yoke has been moved asdescribed above. When the yoke has thus been moved, the feeding rack 7has reached its extreme forward position, the clamp 9 has been raised bythe pull of the rod 31, and the punched and folded tip may be removedfrom the machine. To permit the rack 7 to be returned to its initialposition a strap 63 has one end fastened to a drum 65 which is integralwith the hub of the beveled gear 45. When the rack has been returned toits initial position by pulling upon the strap 63 the clampe9 is stillraised to permit a new tip to placed in position, and the clutch members47, 49 are still separated.

In order to cause these clutch members to engage so as to start thefeeding movement of the rack and to trip the latch 35 so as to permitthe spring 17 to lower the clamp 9' upon the tip, the followingmechanism, shown best in Fig. 2, is provided: A bell crank lever 67, thehorizontal arm of which is connected with a treadle rod 69, has itsupright arm arranged to engage a boss on the yoke 57 when the treadle isdepressed whereby the clutch member 49 is moved into engagement with theclutch member 47. This bell crank lever 67 is also connected with a rod71 slidable in a boss on the frame of the machine and provided at itsupper end with an arm 73 which overhangs the tail of the latch 35, aspring 75 tending to hold the rod 73 and bell crank lever 67 in theposition shown. When, theretore, the treadle is depressed to throw inthe clutch the arm 73 disengages the latch 35 from the rack 7and-permits the clamp 9 to be brought down upon the tip or other pieceof work, the

amazes The intermittent grip device 53 1s operated continuously. througha link 77 pivoted at oneend to a movable part of said device and at theother to an arm 79 fast on a rock end an arm 83 to the outer end ofwhich is pivoted the upper end of a forked link the lower end of whichis pivoted to a-block 817 adjustable in a slot in an arm 89 so that theextent of the intermittent feed movements may be regulated. The arm 89is identical with the feed operating arm in the machine of the Britishpatent referred to above. It is pivoted about a rod 91 and is oscillatedcontinuously by aneccentric93 on the driving shaft 95. If it isdesiredat any time to change the extent of the intermittent feed movements theposition of the block 87 in the slot in the lever 89 may be changed byrockin about its pivot 133 a yoke 135 which em races a pin 137 carriedby said block. To facilitate so rocking the yoke, a

rod 139 fast to the hub-of said yoke projects through a slot in thefront of the frame of the machine as shown in Fig. 1.

The punching is done from beneath, since the lies grain side down on thefeed rack 7. e punch 97 (see Figs. 6 and 7) is mounted on an arm 99pivoted to the frame of the machine at 101. The outer end of the armcarries a roller 103 held down on a cam 105 by a spring 107. The cam isfast to a ear 109 driven by a small gear 111 which is fast on the maindriving shaft 95. The gearing by which the punch is actuated and thecams and levers by which the intermittent grip device 53 is actuated areproportioned and adjusted in accordance with the pattern of punch whichis used. In the present machine, with the parts adjusted as shown, twointermittent feeds occur to one punching operation.

Referring now more particularly to Fig. 7, the punch block 113 has astem 115 adjustably held by a set screw 117 (Figs. 1 and 5), anadjusting screw 119 being provided to facilitate proper positioning ofthe block. The block, as well as certain elements of the foldingmechanism, is mounted upon an overhanging arm 11.2. The block isprovided with a passageway having guides-121. Through the passageway,around the guides, and across the face of the punch block runs a stripof paper 123 which furnishes a backing for'the tip during the punchingoperation and thereby insures clean cut punch holes. A U-shaped guide125 adjustably fastened to the arm 112 holds up the upper run of thepaper strip; and the strip is wound from one roll to another inanysuitable manner, for. example by a reel stand such as that shown ,in'United States Patent No. 941,704, connected by abelt with a pulley 129-on the driving shaft 95. The

operation of the machine is as follows:-

Starting with the parts in the position shown in Figs. 1 and 2 with theclamp 9 raised and the rack 7 in its starting po-. sition which resultsfrom pulling down upon the strap 63, the operator places a tip 100between theclamp and the rack with its edge which is to be foldedagainst the gages 131. He then depresses the treadle rod 69, the effectof which is to trip the latch 35 thereby permitting the spring 17 tobring the clamp 9 down upon-the tip and throwing the clutch members 47,49 into engagement. The tip is then fed intermittently first past thefolding and pressing mechanism and then past the punching mechanism withthe result illustrated in Fig. 8.. To-

ward the end of one revolution of the beveled gear 45, the cam 55.engages the yoke 57 to separate the clutch members, and the rod 31exerts. a pull on the crank 29 to raise the shown in said figure exceptthat the rack is at the extreme end of its feeding movement.

The operator then removes the punched and folded tip and pulls down onthe strap 63 to return the rack to its initial position.

Although the invention has been set forth in connection with .aparticular machine, it should be understood that the invention is notlimited in the scope of its application to the articular machine shownand described.

aving thus described my invention, I claim as new and desire to secureby Letters Patent:.

1. A machine of the class described, having, in combination, a supportfor a piece of stock, means for feeding said stock intermittently oversaid support, means for forming a fold in the margin of said stock,means for hammering the fold, and means for punching the stock near thefolded edge after the fold has been made.

2. A machine of the class'described, having, in combination, a supportfor a piece of stock, means for feeding said stock intermittently oversaid support, means for forming a fold in the margin of said stock,means in the rear of said fold-forming means for hammerin the fold, andmeans in the rear of. said fo d-hammering means for punching said stocknear the edge thereof.

ing said stock near the edge thereof, said hammering and unching meansbelng timed to cause more t an one hammermg operation to each punchingoperation.

4. A machine of the class described, having, in combination, a supportfor a piece of stock, means for folding the mar 1n of the stock, meansfor feeding the stoc past stopping the feed at the end of the foldingoperation. 1 v

5. A machine of the class described, having, in combination, a supportfor a piece of stock, means for folding the margin of\ the stock, meansfor clamping the stock and feeding it past the folding means, andautomatic means for stopping the feed at the end of the foldingoperation.

6. A machine of the class described, having, in combination, a supportfor a piece of stock, means for folding the margln of the stock, meansfor clamping the stock and feeding it past the folding means, andautomatic means for arresting the feed movement at a predeterminedpoint.

7. A machine of the class described, having, in combination, a supportfor a piece of stock, means for fold1ng the margin -of the stock, meansfor clamping the stock and feeding it past the folding means, andautomatic means for releasing the stock at a selected point in the feedmovement.

8. A machine of the class described, hav ing, in combination, a supportfor a piece of stock, means for folding the margin of the stock, meansfor clamping the stock and feeding it past the folding means, automaticmeans for releasing the stock at a selected point in the feed movement,and means permitting variation of said point.

9. A machine of the class described, having, in combination, asupportfor a piece of stock, folding and punching mechanisms for operating uponthe stock, means for clamping. the stock and moving the clamp past saidmechanisms, and means for stoppin the movement of the clamp at the endof the I folding and punching operations.

10. A machine of the class described, having, in combination, a supportfor a piece of stock, folding and punching mechanisms for operating uponthe stock, means for clamping the stock and feeding it past said mecanisms, and automatic means for stopping the feed at the end of thefolding and punching operations.

11. A machine of the class described, having, in combination, a supportfor a piece of stock, folding and punching mechanisms for operating uponthe stock,- means for clamping the stock and feeding it past saidmechanisms, and means for stopping the feed and releasing the stock atthe end of the folding and punching operations.

12. A machine of the class described, havsupport for a piece unchmgmechanisms e stock, means for clamping the stock and feeding it pastsaid mechanisms, and automatic means for sto ping the feed and releasingthe stock at the end of the folding and punching o erations.

13. A machine of the class descn d, having, in combination, a supportfor a piece of stock, folding and punching mechanisms for o erating uponthe stock, means for clamplng the stock and feeding it past saidmechanisms, an edge gage for facilitating presentation of the stock tosaid means, and means for stopping the feed and for opening the [clampat the end of the folding and punching operations. 14. A machine of theclass described, havlng, in combination, a support for a piece of stock,folding and punching mechanisms for operating upon the stock, means forclamping the stock and feeding it past said mechanisms, an edge gage forfacilitating presentation of the stock to said means, and automaticmeans for stopping the feed and for opening the clamp at the end of thefolding and punching operations.

15. A machine of the class described, having, in combination, a supportfor a piece of stock, folding and punching mechanisms for operating uponthe stock, and means for compelling said stock to move past saidmechanisms in a path the curve ofwhich corresponds approximately to thecurve of the edge of the piece which is to be operated upon.

16. A machine of the class described, having, in combination, a supportfor a piece of stock, folding and punching mechanisms for operating uponthe stock, and means for moving said stock past said mechanisms in apath the curve of which corresponds approximately to the curve of theedge of the piece which is to be operated upon, said folding andpunching mechanisms being timed to cause more than one folding operationto each punching operation.

17. A machine of the class described, having, in combination, a supportfor a piece of stock, folding and punching mechanisms for operating uponthe stock, means for clamping the stock and feeding it past saidmechanisms in a path the curve of which corresponds approximately to thecurve of the edge of the piece which is to be operated upon, and meansfor stopping the feed and releasing the clamp at the end of the foldingand punching operations.

18. A machine of the class described, having, in combination, a supportfor a piece of stock, folding and punching mechanisms for operating uponthe stock, means for clamping the stock and feeding it past saidmechanisms in a path the curve of which corresponds approximately to thecurve of the edge of the piece which is to be operated upon, andautomatic means for stopping the feed and releasing the clamp at the endof the folding and punching operations.

19. A machine of the class described, having, in combination, a supportfor a piece of stock, edge folding mechanism, a segmental member movablewith respect to said folding mechanism in a guideway on said support,said segmental member having a radius of. curvature corresponding tothat of the edge of the stock to be folded, a clamping element forholding a piece of stock on said member, and means for operating saidmember and folding mechanism.

20. A machine of the class described, having, in combination, a supportfor a piece of stock, edge folding mechanism, a segmental member movablewith respect to said folding mechanism in a guideway on said support, aclamping element for holding a piece of stock on said member, means foroperating said folding mechanism and clamp, a clutch for operating saidsegmental member, and automatic means for throwing out said clutch.

21. A machine of the class described, having, in combination, a supportfor a piece of stock, folding means including a creaser and acooperating folder which bends the margin of the stock over the creaser,means for pressing the fold, means for punchin the fold, and means forfeeding said stoc intermittently past said folding, pressing andpunching means.

22. A machine of the class described, having, in combination, a supportfor a piece of stock, folding and pressing mechanisms for operating uponsaid stock, and means for compelling said stock to move past saidmechanisms in a path the curve of which corresponds to the curve of theedge of the piece which is to be operated upon.

23. A machine of the class'described, having, in combination, a support(for a piece of stock, folding and punchin mechanisms for operating uponthe stoc means for feeding the stock past said mechanisms, and automaticmeans for stopping the feed movement when the rear end of the stock haspassed said" mechanisms.

24. A machine of the class described, having, in combination, a supportfor a piece of stock, means for feeding the stock intermittently overthe support, mechanism for formin a fold in the margin of the stock,mechamsm for hammering the fold, and mechanism for forming a row ofornamental punch holes near the folded edge thereof, said folding,hammering and punching mechanisms bein located to operate upon the stocksuccesslvel in the'order named.

25. A machine 0 the class described,

having, in combination, means for feed-' ing the stock intermittently,means for forming a fold in the margin of the stock, a hammer held formovement in the line of feed, means for causing the hammer to rise andfall so as to hammer the fold, and means for punching holes through bothplies of the folded margin.

In testimony whereof I have signed my name to this specification.

PERLEY R. GLASS.

